Python之常见报错missing 2 required positional arguments的2种问题排查方法

报错：TypeError: wait_assert_sql() missing 2 required positional arguments: 'assert_sql' and 'value'

@propertydef wait_assert_sql(self, assert_sql, value):    print("assert_sql")    print("value")

Request.wait_assert_sql(assert_sql="select", value=2)

分析原因1：

由@property 装饰后，调用函数时不需要填写参数。因为调用时，填写了参数，所以出现了报错

报错：TypeError: wait_assert_sql() missing 2 required positional arguments: 'assert_sql' and 'value'

def wait_assert_sql(self, assert_sql, value):    print("assert_sql")    print("value")

Request.wait_assert_sql()

分析原因2：

定义函数时，有传参，调用时也需要有传参

修改后：

def wait_assert_sql(self, assert_sql, value):    print("assert_sql")    print("value")

Request.wait_assert_sql(assert_sql="select", value=2)

修改如上后，可以正常执行，不会有报错